Power-transmitting gear mechanism.



E. A. JOHNSTON & C'. ILONGENEGKER POWER TRANSMITTING GEAR MEGHANISM.

, l APPLIOATION FILED JUNE i 1,004,880. y 30 m9 Patented 001.3,1911

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E. A. JOHNSTON & C. I. LONGENEGKER.

POWER TRANSMITTING GEAR MEGHANISM. APPLICATION FILED JUNE 3o, 1910,

1,004,880. Patented Oct. 3, 1911f 3 SHEETS-SHEET 2.

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. JOHNSTON & C. I. LONGENEGKER.

' APPLICATION FILED TUNES 9 1,004,880. l l Patented nous, 1911.

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narran srarns ramena ernten EDWARD A. JOHNSTON AND CHARLES I.LONG-ENECKER, OF CHICAGO, ILLINOIS, ASSIGNORS TO INTERNATIONAL HARVESTERCOMPANY, A CORPORATION OF NEW JERSEY.

POWER-TRANSMITTING GEAR MECHANISM.

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To all whom it may concern:

Be it known that we, EDWARD A. JOHN- sToN and CHARLES I. LoNGnNnoKER,citizens of the United States, residing at Chicago, county of Cook, andState of Illinois, have invented certain new and useful Improvements inPower-Transmitting Gear Mechanism, of which the following is aspecication.

Our invention relates to power transmitting gear mechanism for use inconnection with traction engines, and in particular to the constructionand mounting of the transmission gears and other specific details of ourinvention, the object being to provide a construction that is bothstrong and simple and one that will be durable and efficient inoperation. We attain these objects by means of the mechanism illustratedin the accompanying drawings, in which-- Figure 1 is a side elevation ofa traction engine having our invent-ion forming a part thereof; Fig. 2is a top plan view of Fig. 1, partly in section, with the engineremoved; Fig. 3 is a detached detail showing the manner of transmittingmotion from the engine shaft to other operative parts of the machine; Fig. 4 is a side elevation, partly in section, of Fig. 3; Fig. 5 is adetached detail showing part of the engine shaft and the manner ofmounting the clutch mechanism thereon; Fig. 6 is a detail in section ofthe dierential gear mechanism.

The same reference characters designate like parts throughout theseveral views.

1 represents the truck frame, including two longitudinally arrangedright and lefthand main sill members 2 and 3, connected at their forwardends by means of a transverse bolster member 4, that is provided with adepending arm 5, having its lower end flexibly connected with a fronta-Xle .6, and 7 represents steering and carrying wheels journaled uponopposite ends of said aXle. l 8 represents a supplemental sill memberupon the left-hand side of the frame, having its body portion parallelwith the main sills and its forward end curved inward and connected tosill member 3 intermediate its ends by means of joint plates 9 securedto the upper and lower sides of the sill members. 10 represents asimilar supplemental specification of Letters Patent. i

Application led June 30, 1910.

Patented Oct. 3, 1911. seria1 No. 569,639.

sill arranged upon the right-hand side of the frame and having its frontend turned inward and connected with sill 2 by means of joint plates 11secured to the upper and lower sides of the sill members. The sills 3and 8 are connected at their rear ends by means of Va cast frame memberhaving forwardly projecting arms 12 and 13 that are provided withdepending flanges 14 and 15, to which are secured the sill members 3 and8, respectively, and a transversely arranged rear portion 16, having anangular channel 17 adapted to receive the rear aXle member 18, havingits body portion preferably square in cross section, and is secured inposition by means of a cap 19 and bolts 20. Thesill members 2 and 10 areconnected at their rear ends by means of a longitudinally arranged castmember 21, having depending flanges 22 and 23, to which are secured thesills 2 and 10, respectively. An angular channel 24, similar in form tothat of 17, upon the opposite side of the truck frame, is arrangedacross the rear end of member 21 in a manner to receive the opposite endof the axle 18, which is secured therein by means of a cap 25 and bolts26. The axle is provided with spindle portions at opposite ends thereof,upon which are j ournaled tract-ion and carrying wheels 27, that areretained thereon by means of caps 28.

29 represents spur gear members secured to the inner ends of the hubs ofthe traction wheels, and 30 represents a cross shaft journaled inbearings 31 and 32 at the front ends of arms 12 and 13, respectively,and bearing 33 at the front end of the frame member 21.

34 represents a pinion secured to the cross shaft at the outer end ofbearing 33 and meshing with one of the spur gear members 29.

35 represents a bevel gear wheel having a sleeve portion 36 that issecured to the cross shaft by means of a key 37.

38 represents a spur gear member journaled upon the sleeve 36 and havinga laterally extending rim portion 39, and 40 represents a series ofbevel pinions journaled upon radially arranged pins 41 carried by saidspur gear member, said pinions meshing with the bevel gear wheel 35 uponone side thereof and with a bevel wheel 42 upon the opposite side, thelatter wheel being provided with a sleeve portion 43 that is free toturn upon the shaft 30.

44 represents a pinion secured to the sleeve at the outer end of bearing32 by means of a key 45, the pinion meshing with the spur gear securedto the traction wheel upon that side of the truck, the mechanism beingoperative as a differential driving connection between the spur gear 38and the traction wheels.

46 represents a truck frame member secured to sills 2 and 3 and adaptedto form a sub-base, upon which is mounted the base portion 47, formingpart of an explosive engine, including a power cylinder 48, crank shaft49 and fly wheels 50 secured to opposite ends of the crank shaft. Thefly wheel upon the left-hand side of the truck is provided with alaterally projecting rim portion 51 upon its outer side, and 52represents a clutch member having a hub portion 53 journaled upon theengine shaft, and a rim portion 54 connected with the hub by means ofarms 55.

56 represents levers pivotally mounted intermediate their ends upon therim 54, having counterweights 57 at one end thereof and friction shoes58 at their opposite ends.

59 represents a clutch controlling sleeve slidably mounted upon hubportion 53, having a circumferential groove 60 in its periphery that isadapted to receive a clutch shipping fork 61, secured to the upper endof a vertically arranged rock shaft 62 that is provided with a crank arm63 at its lower end. The sleeve 59 is connected with the levers 56 bymeans of yielding toggle links 64, having their inner ends pivotallyconnected with the sleeve and their outer ends with said levers. Thelinks include socket members 65 that slidably receive plungers 66 thatcarry compression springs 67 operative to extend the links in a mannerto yieldingly hold the friction shoes in contact with rim 51 when theclutch controlling sleeve is moved in one direction.

68 represents a vertically arranged standard secured at its lower end tothe supplemental sill 8, and having at its upper end a bearing 69 toreceive the outer end of the engine crank shaft, and 70 represents apinion journaled upon said shaft between the bearing and the inner endof the hub 53 of clutch member 52, the hub of the pinion engaging withthe hub of the clutch member in a manner to be driven thereby, thepinion meshing with the spur gear member 38. Secured to the overhangingend of the engine crank shaft is a friction wheel 71.

72 represents a yoke pivotally connected with standard 68 by means of apin 73, and provided with a sleeve portion 74, in which is journaled ashaft 75, upon the inner end of which shaft is secured the pinion 76,meshing wit-h spur gear member 38. 77 represents a friction wheelsecured to the opposite end of the shaft and adapted to engage withfriction wheel 71.

78 represents a forwardly projecting ear forming part of the yoke 72,and 79 represents a pin connect-ing the lower ends of links 80therewith.

8l represents a longitudinally adjustable toggle member havingritselower end pivotally connected with standard 68 by means of a clevismember 82 and pin 83, and its upper end with a block 84 by a similarclevis 85 and pin 86, the upper ends of the links 80 being' alsoconnected with the block upon opposite sides of the clevis by means ofthe same pin.

Journaled in bearings carried by the cap 19 is a transverse rock shaft87, having secured to its inner end a hand lever 88 provided with acommon form of spring pressed detent 89 adapted to engage with a notchedsector 90 in a manner to secure the lever in any desired position ofadjust-ment, and 91 represents the usual thumb lever for controlling themovement of the det-ent. Upon the opposite end of the shaft is a leverarm 92 that is connected with the block 84 by means of a rod 93 wherebythe toggle member 81 may be swung about its pivot and, through itsconnection with yoke 72, cause the latter to rise or fall in a manner tocause friction wheel 77 to engage with or be disengaged from thefriction wheel 71.

94 represents a sleeve mounted upon shaft 87 in a manner to turnthereo-n and held against longitudinal movement by means of a collar 95.

96 represents a hand lever secured to the inner end of the sleeve, and97 an arm integral therewith at its opposite end, the arm beingconnected with crank arm 63 at the lower end of the vertical shaft 62 bymeans of a rod 98.

99 represents a rock shaft journaled in bearings 100 and 101 carried byframe members 12 and 2l, respectively, and provided at one end withoppositely disposed arms 102 that are connected with opposite ends of aband brake member 103 encircling the rim portion 39 of the spur gear 38and at its opposite end with a rearwardly extending foot lever 104whereby the operator may manipulate the brake mechanism in a convenientand efficient manner.

. In operation, the engine shaft rotates in the direction of the arrow(Fig. 1), and when it is desired to move the tractor in a forwarddirection the operator throws the hand lever 96 rearward sufficient to`cause the clutch shipping fork to slide the clutch controlling sleeve59 toward the ily wheel in a manner to cause the toggle membersconnected therewith to move the friction shoes in contact with thefriction rim forming part of the fly Wheel, said toggle members beingmoved to a self-retaining position at the opposite side of a verticalplane, as shown by dotted lines in Fig. 5, and then the pinion 70 willbe caused to rotate with the hub 53 and transmit motion in a forwarddirection to the traction wheels through its gear connection therewith.To give motion in a reverse direction to the traction wheels the clutchmechanism is thrown out of engagement and hand lever 88 thrown rearward,as before described, which, through its toggle connection with yoke 72,causes the friction wheel 77 to engage with friction wheel 7l, andpinion 7 6, through its driving connection with spur gear member 38,transmits motion thereto in an opposite direction.

What we claim as our invention, and desire to secure by Letters Patent,is:

l. A power transmitting gear mechanism including, in combination, a gearsupporting frame, a primary power transmitting shaft carried by saidframe, a pinion loosely mounted upon said shaft, a secondary powertransmitting shaft carried by said frame and a gear wheel securedthereto, said gear wheel engaging with said pinion in a manner to bedriven thereby in one direction, a clutch member secured to androtatable with said primary shaft, a clutch member loosely mounted uponsaid primary shaft and having a driving connection with said pinion,means for controlling the engagement of said clutch members, a frictionwheel secured to said primary shaft, a movable countershaft carried bysaid frame, a friction pulley secured to one end of said countershaftand adapted to engage with said friction wheel, a pinion secured to theopposite end of said countershaft and engaging with the gear wheel uponsaid secondary shaft and adapted to rotate said shaft in a reversedirection, and means for moving said countershaft in a manner to causesaid friction pulley to contact with said friction wheel.

2. A power transmitting gear mechanism including, in combination, a gearsupporting frame, a primary power transmitting shaft carried by saidframe, a pinion loosely mounted upon said shaft, a secondary powertransmitting shaft carried by said frame and a gear wheel securedthereto, said gear wheel engaging with said pinion in a manner to bedriven thereby in one direction, a clutch member secured to androtatable with said primary shaft, a clutch member loosely mounted uponsaid primary shaft and having a driving connection with said pinion,means for controlling the engagement of said clutch members, a frictionwheel secured to said primary shaft, a swinging yoke pivotally connectedwith said frame, a countershaft journaled in said yoke, a frictionpulley secured to one end of said countershaft and adapted to contactwith said friction wheel, a pinion secured to the opposite end of saidcountershaft and meshing with the gear wheel upon said secondary shaft,and means operative to swing said yoke in a manner to cause saidfriction pulley to engage with said friction wheel and to rotate saidsecondary shaft in a reverse direction.

8. A power transmitting gear mechanism including, in combination, a gearsupporting frame, a primary power transmitting shaft carried by saidframe, a pinion loosely mounted upon said shaft, a secondary powertransmitting shaft carried by said frame and a gear wheel securedthereto, said gear wheel engaging with said pinion in a manner to bedriven thereby in one direction, a clutch member secured to androtatable with said primary shaft, a clutch member loosely mounted uponsaid primary shaft and having a driving connection with said pinion,means for controlling thev engagement of said clutch members, avertically arranged standard forming part of said gear supporting frame,having a bearing at its upper end in which is journaled said primaryshaft, a yoke pivotally connected with said standard, a countershaftjournaled in said yoke, a friction wheel secured to said primary shaft,a friction pulley secured to one end of said countershaft and adapted tocontact with said friction wheel, a pinion secured to the opposite endof said countershaft and meshing with the gear wheel upon said secondaryshaft, and means operative to swing said yoke in a manner to cause saidfriction pulley to engage with said friction wheel and to rotate saidsecondary .shaft in a reverse direction, said means including a swingingtoggle member having its lower end pivotally connected with saidstandard and its opposite end having a link connection with said yoke.

EDVARD A. JOHNSTON.

CHARLES L LONGENECKER. Witnesses:

A. A. JONES,

L. HOUSTON.

Copies of this patent may be obtained for iive cents each, by addressingthe Commissioner of Patents, Washington, D. C.

